Shrub rose plant named &#39;baioon&#39;

ABSTRACT

A new and distinct variety of landscape shrub rose plant is provided which forms on a recurrent basis attractive large fully double medium yellow quartered blossoms that change to light lemon yellow upon maturity. The plant exhibits a dense upright shrub or climbing growth habit depending upon the zone where grown. The dark green glossy foliage contrasts nicely with the yellow blossom coloration. High tolerance to Black Spot and Powdery Mildew is displayed. The plant can be grown to advantage to provide attractive ornamentation in parks and gardens.

BOTANICAL COMMERCIAL CLASSIFICATION

Rosa hybrida/Shrub Rose Plant

VARIETAL DENOMINATION

cv. BAIoon

SUMMARY OF THE INVENTION

The new variety of Rosa hybrida landscape shrub rose plant was createdat Yamhill, Oreg., U.S.A., during 1996 by artificial pollination whereintwo parents were crossed which previously had been studied in the hopethat they would contribute the desired characteristics. The femaleparent (i.e., the seed parent) was a hybrid Rosa hybrida shrub rosedesignated ‘R871’ (non-patented in the United States). The male parent(i.e., the pollen parent) was the ‘POUlurt’ variety (U.S. Plant Pat. No.9,637). The ‘POUlurt variety sometimes is known as the ‘Aspen’ variety.The parentage of the new variety can be summarized as follows:

‘R871’×‘POUlurt’

The seeds resulting from the above pollination were sown and plants wereobtained which were physically and biologically different from eachother. Selective study resulted in the identification of a single plantof the new variety having the distinctive ornamental characteristicshereafter described.

It was found that the new variety of the present invention:

(a) exhibits a dense upright shrub or climbing growth habit depending onthe zone where grown,

(b) forms on a recurrent basis attractive large fully double mediumyellow quartered blossoms that change to light lemon yellow uponmaturity,

(c) forms dark green glossy foliage,

(d) displays high tolerance to Black Spot and Powdery Mildew, and

(e) is particularly well suited for growing as attractive ornamentationin parks and gardens.

In cooler regions, the new variety is an upright and bushy shrub and inwarmer zones it is a climber. The medium yellow buds open to a fullbloom with shades of medium to pale yellow. The center petals tend toretain a darker shade while the outer petals fade to a light lemonyellow. Finally, the entire bloom becomes mostly light yellow. Theblossom coloration contrasts nicely with the glossy dark green foliage.The new variety performs well in U.S.D.A. Hardiness Zone Nos. 4 to 9.

The new variety well meets the needs of the horticultural industry. Itcan be grown to advantage where attractive ornamentation is desired,such as in parks and gardens.

The new variety can be readily distinguished from other varietiesincluding its parental varieties. More specifically, the ‘R871’ parentforms light yellow blossoms having approximately 15 petals, and mediumgreen foliage. The ‘POUlurt’ parent forms yellow blossoms havingapproximately 15 to 25 slightly ruffled petals, and medium greensemi-glossy foliage.

The new variety of the present invention also can be readilydistinguished from the ‘Prairie Harvest’ variety (non-patented in theUnited States) and the ‘MORyelrug’ variety (U.S. Plant Pat. No. 6,793).Both of these varieties form lighter green foliage and significantlylarger blossoms having substantially lesser petal counts.

The new variety has been found to undergo asexual propagation by buddingon an understock beginning in August 1997 and by the rooting ofcuttings. ‘Dr. Huey’ rootstock (non-patented in the United States) wasused during the budding. Such asexual propagation by these techniques atYamhill, Oreg., U.S.A., St. Paul, Minn., U.S.A., and at Phoenix, Ariz.,U.S.A., has shown that the characteristics of the new variety are stableand are strictly transmissible by such asexual propagation from onegeneration to another. Accordingly, the new variety reproduces true totype. The new variety grows well on its own roots.

Initially the new plant was designated ‘96R405’, and was evaluatedduring 2002 and 2003 under the designation ‘02R513’. The new varietysubsequently has been named the ‘BAIoon’, and currently is beingmarketed while using the TAHITIAN MOON and LIFESTYLE GARDEN trademarks.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs show as nearly true as it is reasonablypossible to make the same in color illustrations of this character,typical specimens of the new variety. The rose plants of the new varietyhad been propagated by the rooting of cuttings, were approximately twoand three years of age, and were being grown outdoors at St. Paul,Minn., U.S.A. and Yamhill, Oreg., U.S.A. during the 2003 and 2004seasons.

FIG. 1 illustrates a flowering plant of the new variety while present ona support. The attractive glossy dark green foliage is shown to contrastwell with the very double yellow blossoms.

FIG. 2 illustrates a close view of the several very double blossomswherein the typical quartered arrangement of the petals is illustrated.

FIG. 3 illustrates a close view of a typical blossom during the courseof opening as well as foliage, and

FIG. 4 illustrates a further close view of a fully mature blossom of thenew variety.

DETAILED DESCRIPTION

The chart used in the identification of the colors is that of The RoyalHorticultural Society (R.H.S. Colour Chart). Common color terms are tobe accorded their ordinary dictionary significance. The description isbased on the observation of three and four year-old plants while grownoutdoors on their own roots during June 2003 at Yamhill, Oreg., U.S.A.,and July 2004 at St. Paul, Minn., U.S.A.

-   Botanical classification: Rosa hybrida, var. ‘BAIoon’.-   Class: Landscape Shrub.-   Plant:    -   -   Height —approximately 60 cm to 1.8 m on average at the end            of the growing season.        -   Width.—approximately 55 cm to 1.25 m on average at the end            of the growing season.        -   Habit.—dense upright shrub in the cooler climates, and a            climber in warmer climates.-   Branches:    -   -   Color.—young stems: Yellow-Green Group 144B. — adult wood:            Greyed-Green Group 197B with streaks of Grey-Brown Group            199C and 199D.        -   Texture.—young stems: glabrous. — adult stems: rough with            bark-like ridges.        -   Thorns.—size: commonly approximately 10 mm in length on            average. — shape: triangular to slightly hooked. — quantity:            approximately 3 on average over a branch length of 5 cm. —            color: Yellow-Green Group 144B and 144C with highlights of            Greyed-Purple Group 185C.-   Leaves:    -   -   Size.—length: approximately 10.1 cm on average. — width:            approximately 7.5 cm on average.        -   Stipules.—generally parallel with the auricle facing            outward, approximately 1.6 cm in length on average,            approximately 4.1 mm in width on average, and Yellow-Green            Group 144A in coloration commonly with some Yellow-Green            Group 144B on ridges on either side of a central ridge.        -   Petioles.—upper surface: Yellow-Green Group 144A. — under            surface: Yellow-Green Group 144B and 144C. — length:            approximately 2.1 cm on average. — diameter: approximately 1            mm on average. — texture: generally glabrous with a few            spines on both sides.        -   Leaflets.—number: 3, 5 (most often), and 7. — size:            approximately 4.5 cm in length on average, and approximately            2.8 cm in width on average. — shape: obovate to elliptic            with a rounded base and an acuminate tip. — margin:            serrulate. — texture: bears a glossy finish. — general            appearance: dark green with a glossy surface when mature. —            color (young foliage): upper surface: Yellow-Green Group            147A tinted with Greyed-Purple Group 185A. under surface:            Yellow-Green Group 147A tinted with Greyed-Purple Group            184C. — color (adult foliage): upper surface: Yellow-Green            Group 147A. under surface: Yellow-Green Group 147B.-   Inflorescence:    -   -   Number of flowers.—typically in clusters, and commonly            approximately 3 flowers on average per stem.        -   Peduncle.—glabrous, medium stiff, commonly approximately            7.15 cm in length on average, and Yellow-Green Group 144A            and 144B in coloration.        -   Sepals.—upper surface: Green Group 143A with pubescence. —            under surface: Yellow-Green Group 144A streaked with Green            Group 143A. — size: approximately 1.25 cm in length on            average. — shape: upright at the bud stage, generally            horizontal when opening, and reflexed when in full bloom. —            apex: initially apiculate, and then may grow a small            leaf-shaped appendage with a main vein. — texture: tomentose            on the upper surface and glabrous on the under surface. —            foliaceous appendages: commonly present on three sepals with            one or two appendages on each side which are approximately            4.5 mm in length with a pointed apex and ciliate margin.        -   Buds.—shape: generally globose. — size: medium. — length:            approximately 3.5 cm on average. — diameter: approximately            2.0 cm on average. — color: upper petal surface: Yellow            Group 7A. under petal surface: Yellow Group 7A.        -   Flower.—form: fully double. — diameter: approximately 6.5 cm            on average. — color (when opening begins): upper surface:            Yellow Group 6A lightening to Yellow Group 4D at the margin.            under surface: Yellow Group 6A lightening to Yellow Group 6D            at the margin. — color (when blooming): upper surface:            Yellow Group 6C lightening to Yellow Group 4C and 4D at the            margin with the inner petals being Yellow Group 6B and 6C            lightening to Yellow Group 8C. under surface: Yellow Group            5D blended with Yellow Group 6D lightening to Yellow Group            4D, and to Yellow Group 5D and Yellow Group 6D on the outer            petals. — color (at end of blooming): upper surface:            commonly between Yellow Group 8B and 8C with some lightening            to Yellow Group 4D. under surface: commonly between Yellow            Group 8C and 8D. — color (basal petal spot): Yellow Group            9A. — fragrance: slight rose. — lasting quality: the            blossoms commonly last approximately 5 to 8 days on average            depending upon the temperature and sunlight exposure. —            petal number: commonly approximately 95 to 115 on average. —            petal shape: orbicular with a point at the apex. — petal            size: approximately 3.7 cm in length on average, and            approximately 3.4 cm in width on average. — petal texture:            glabrous, smooth and satiny. — petal drop: commonly the            petals detach cleanly at full blossom maturity. — stamen            number: commonly approximately 56 on average. — anthers:            Yellow Group 9B, approximately 3 mm in length on average,            and approximately 1.5 mm in width on average. — filament            color: Yellow Group 12B. — filament length: approximately 1            cm on average. — pollen: Yellow Group 13A. — pistils:            approximately 71 on average. — stigmas: Yellow Group 10C            blending to Orange-Red Group 34B, approximately 1.3 mm in            length on average, and approximately 1 mm in width on            average. — style color: Yellow Group 2C. — style length:            approximately 6.7 mm on average. — receptacle: when the            flower is fully open is urn-shaped, approximately 8 mm in            height, approximately 5.6 mm in diameter, and the coloration            commonly is Yellow-Green Group 144A and 144B with some            Greyed-Purple Group 184B on the side exposed to the sun. —            hips: glabrous, obovate in configuration, approximately 2.5            cm in length, approximately 1.5 cm in width, and            Yellow-Green Group 144A mottled with Yellow-Green Group 144B            in coloration. — seeds: medium beige in coloration, and            approximately 3 mm in length.-   Development:    -   -   Vegetation.—vigorous.        -   Blooming.—recurrent.        -   Resistance to diseases.—Highly tolerant to Black Spot and            Powdery Mildew.        -   Hardiness zone.—U.S.D.A. Hardiness Zone Nos. 4 to 9.

1. A new and distinct landscape shrub rose plant characterized by thefollowing combination of characteristics: (a) exhibits a dense uprightshrub or climbing growth habit depending upon the zone where grown, (b)forms on a recurrent basis attractive large fully double medium yellowquartered blossoms that change to light lemon yellow upon maturity, (c)forms dark green glossy foliage, (d) displays high tolerance to BlackSpot and Powdery Mildew, and (e) is particularly well suited for growingas attractive ornamentation in parks and gardens; substantially asherein shown and described.